They are good from what I hear... Milwaukee, Ridgid and Ryobi, and I believe Bosch are all owned by same company. I think the Bosch and Milwaulke are top shelf and Ridgid not far behind. Ryobi is pretty good to for a little more of a bargain price....
I had a 1 and a half nut I needed to remove. 160ft lbs. Had a Ridged 1/2 in impact. Would nor budge it. So I bought a new ridged 1/2\inch cordless impact, the new brush less one. Took it right off, I was impressed!